Use https to download checkstyle jars. Relates to #375 on github
Use https to download checkstyle jars. Relates to #375 on github

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1823885 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 14d8b556897bf2c5bec659e6928603b511766420
benbenw/jmeter,etnetera/jmeter,ham1/jmeter,etnetera/jmeter,etnetera/jmeter,benbenw/jmeter,apache/jmeter,benbenw/jmeter,ham1/jmeter,ham1/jmeter,etnetera/jmeter,apache/jmeter,ham1/jmeter,benbenw/jmeter,etnetera/jmeter,apache/jmeter,apache/jmeter,ham1/jmeter,apache/jmeter